CN214538820U - Odor space multipoint sampling system - Google Patents
Odor space multipoint sampling system Download PDFInfo
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- CN214538820U CN214538820U CN202121252812.7U CN202121252812U CN214538820U CN 214538820 U CN214538820 U CN 214538820U CN 202121252812 U CN202121252812 U CN 202121252812U CN 214538820 U CN214538820 U CN 214538820U
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Abstract
The application relates to the field of monitoring equipment, in particular to a multi-point sampling system for a malodorous space, which comprises a plurality of sampling mechanisms, a vacuum pump communicated with the sampling mechanisms and a gas analyzer communicated with the vacuum pump; the sampling mechanism comprises a collecting box, an air inlet pipe and an air outlet pipe which are respectively communicated with two opposite side walls of the collecting box, a ceiling fan arranged on the inner upper wall of the collecting box, and a control piece used for controlling the on-off of the sampling mechanism and the gas analyzer. The during operation, when a control opens, other controls are closed, and in gaseous entering into the collection box, the ceiling fan continuously rotated and moved the air to the collection box and carry out the homogeneity and handle for it is more even to wait to detect the gas, and gaseous entering into gas analysis appearance through the outlet duct and carries out analysis, detection, and later second control is opened, and other controls are closed, and the gas of collecting to second sampling mechanism detects, and so on the control opens in proper order, and this application has the effect of multiple spot sampling.
Description
Technical Field
The application relates to the field of monitoring equipment, in particular to a multi-point sampling system for a malodorous space.
Background
The current research work of air quality comprises pollution source field data acquisition, pollution influence evaluation, modeling analysis and development of emission reduction technology, wherein the field data sampling is the basis of the whole research.
At present, sampling work is completed through a sampler, the sampler comprises a sampling box and a sampling pump located in the sampling box, and the sampler can only collect gas in a small area and cannot reflect characteristics in a large range due to the fact that the sampling box is small in size, and the sampling pump located in the sampling box is small in size and low in power.
SUMMERY OF THE UTILITY MODEL
In order to be able to carry out sampling reaction to a wider range of gases, the application provides a foul space multipoint sampling system.
The application provides a foul smell space multiple spot sampling system adopts following technical scheme:
a multi-point sampling system for a malodorous space comprises a plurality of sampling mechanisms distributed at the upper end of a surface source to be detected, a vacuum pump communicated with the sampling mechanisms, and a gas analyzer communicated with the vacuum pump; the sampling mechanism comprises a collecting box positioned at the upper end of the surface source to be detected, an air inlet pipe and an air outlet pipe which are respectively communicated with two opposite side walls of the collecting box, a ceiling fan arranged on the inner upper wall of the collecting box, and a control piece used for controlling the on-off state between the sampling mechanism and the gas analyzer, wherein the air outlet pipe is communicated with the vacuum pump through a pipeline.
Through adopting above-mentioned technical scheme, when a control opens, other control is closed, it enters into the collection box to wait to detect gaseous through the intake pipe, the ceiling fan lasts to rotate and moves the air that carries out the homogenization treatment to the collection box in, make the gaseous more even that waits to detect, gaseous enters into gas analysis appearance through the outlet duct and carries out the analysis, detect, later second control opens, other controls close, the gas that collects to second sampling mechanism detects, analogize the control and open in proper order with this, multi-point sampling has been realized, carry out sampling test to a regional gas.
Optionally, the sampling mechanism further includes an air inlet valve and an air inlet flow sensor, and the air inlet valve and the air inlet flow sensor are sequentially installed on the air inlet pipe along the air flowing direction.
By adopting the technical scheme, the mass of the gas entering the collecting box is controlled through the gas inlet valve, so that the gas entering the collecting box is kept at the density suitable for measurement; the air inlet flow sensor senses the air flow and feeds back a signal to the air inlet valve, and the air inlet valve controls the opening degree of the air inlet valve so as to control the inflow speed of the air.
Optionally, the sampling mechanism further comprises an air outlet valve and an air outlet flow sensor, and the air outlet valve and the air outlet flow sensor are sequentially installed on the air outlet pipe along the air flowing direction.
Through adopting above-mentioned technical scheme, gas density in the control collection box is worked in coordination with admission valve to the air outlet valve.
Optionally, the sampling mechanism further comprises an internal temperature sensor mounted on the inner wall of the collection box and an external temperature sensor mounted on the outer wall of the collection box.
Through adopting above-mentioned technical scheme, inside temperature sensor and outside temperature sensor are used for detecting the gaseous temperature of collection incasement wall and outside respectively, and the change of temperature has stronger influence to gaseous collection and detection.
Optionally, the sampling mechanism further comprises a differential pressure sensor embedded in the side wall of the collection box.
Through adopting above-mentioned technical scheme, pressure differential sensor senses the inside and outside pressure differential of box, with signal feedback to admission valve and gas outlet valve department, the inside gas volume of control box.
Optionally, an anemoscope is installed at the upper end of the collection box.
By adopting the technical scheme, the wind speed outside the box body is measured, and the wind speed has influence on the sampling test.
Optionally, an electric three-way valve is arranged on a pipeline between the vacuum pump and the gas analyzer.
Through adopting above-mentioned technical scheme, the gas flow that electric three-way valve can control the gas flow that enters into in the gas analysis appearance accurately is the definite value, and then improves the accuracy that detects.
Optionally, the control element is a control valve arranged between the outlet gas flow sensor and the vacuum pump.
By adopting the technical scheme, the connection and disconnection of the sampling mechanism to the gas analyzer are controlled by the control valve.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the control pieces are opened one by one, the other control pieces are closed, the gas to be detected enters the collecting box through the gas inlet pipe, after the gas to be detected is homogenized in the collecting box by the ceiling fan, the gas enters the gas analyzer through the gas outlet pipe to be analyzed and detected, finally, multipoint sampling is realized, and the gas in one region is sampled and detected;
2. the gas volume in the collection box is controlled through the gas inlet valve and the gas outlet valve, so that the gas volume in the collection box is maintained at a stable value.
Drawings
Fig. 1 is a schematic view of the entire structure of the sampling mechanism.
Fig. 2 is a schematic diagram of the overall structure of a malodor space multi-point sampling system according to an embodiment of the present application.
Description of reference numerals: 1. a sampling mechanism; 11. an air inlet pipe; 12. an intake air flow sensor; 13. an intake valve; 14. an internal temperature sensor; 15. a measurement and control module; 16. a ceiling fan; 17. a differential pressure sensor; 18. an anemometer; 19. a collection box; 110. an external temperature sensor; 111. an air outlet valve; 112. an outlet gas flow sensor; 113. a control valve; 114. an air outlet pipe; 2. a vacuum pump; 3. an electric three-way valve; 4. a gas analyzer; 5. detecting a surface source to be detected; 6. a connecting pipe; 7. and (5) discharging the air pipe.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a multi-point sampling system for a foul space. Referring to fig. 1 and 2, the multi-point sampling system for the foul space comprises a plurality of sampling mechanisms 1 distributed at the upper end of a surface source 5 to be detected, a vacuum pump 2 connected with the sampling mechanisms 1 through a pipeline, and a gas analyzer 4 connected with the vacuum pump 2.
Referring to fig. 2, the output end of the vacuum pump 2 is connected with an electric three-way valve 3 (model: VB3300/VB 7300), the air inlet of the electric three-way valve 3 is communicated with the output end of the vacuum pump 2, a connecting pipe 6 is communicated between the electric three-way valve 3 and the gas analyzer 4, one end of the connecting pipe 6 is communicated with the air outlet end of the electric three-way valve 3, and the air outlet end of the electric three-way valve 3 is connected with an air outlet pipe 7.
Referring to fig. 1, the sampling mechanism 1 includes a collecting box 19 disposed above the surface source 5 to be detected, a ceiling fan 16 mounted inside the collecting box 19, and an air inlet pipe 11 and an air outlet pipe 114 communicated with two opposite side walls of the collecting box 19; the collecting box 19 is rectangular, and the ceiling fan 16 is mounted on the inner upper wall of the collecting box 19.
During operation, the vacuum pump 2 is started, gas enters the collection box 19 through the gas inlet pipe 11, the ceiling fan 16 is started, the ceiling fan 16 rotates, and the gas in the collection box 19 is uniformly stirred.
Referring to fig. 1, because the wind speed has an influence on the sampling test, an anemoscope 18 for measuring the wind speed is installed at the upper end of the collection box 19, and a measurement and control module 15 for measuring the temperature and the air pressure in the air is installed at the upper end of the collection box 19. An external temperature sensor 110 for measuring the temperature outside the collection box 19 is mounted on the outer wall of the collection box 19, and an internal temperature sensor 14 for measuring the temperature inside the collection box 19 is mounted on the inner wall of the collection box 19.
Referring to fig. 1, an air inlet valve 13 for controlling the flow rate of air and an air inlet flow sensor 12 for controlling the opening of the air inlet valve 13 are installed on an air inlet pipe 11, and an air outlet valve 111 for controlling the exhaust speed of air and an air outlet flow sensor 112 for controlling the opening of the air outlet valve 111 are installed on an air outlet pipe 114; a controller is provided between the intake valve 13 and the intake flow sensor 12, and a controller is also provided between the outlet valve 111 and the outlet flow sensor 112.
The intake flow sensor 12 monitors the flow of the gas in the intake pipe 11 in real time, converts the flow into an electric signal and transmits the electric signal to the controller, and the controller controls the opening and closing of the intake valve 13. The flow rate of the gas in the outlet pipe 114 sensed by the outlet flow sensor 112 feeds back an electric signal to the controller, and the controller controls the opening and closing of the outlet valve 111.
Referring to fig. 1, a differential pressure sensor 17 for measuring the pressure difference between the inside and the outside of the collection box 19 is installed on the collection box 19, the differential pressure sensor 17 transmits an electric signal to a controller, and the controller controls the opening and closing of the air outlet valve 111 and the air inlet valve 13, so that the pressure in the collection box 19 is constant.
Referring to fig. 1 and 2, a control valve 113 is installed at the end of the outlet pipe 114, and the control valve 113 controls the opening and closing of the outlet pipe 114.
Referring to fig. 1, when the sampling mechanism 1 is applied to a liquid surface source gas (such as a sewage tank), a floatation device may be installed at the lower end of the collection tank 19 so that the collection tank 19 floats on the upper end of the liquid gas surface source such as the sewage tank.
The implementation principle of the multi-point sampling system for the foul space in the embodiment of the application is as follows:
the method comprises the steps of firstly, reasonably placing a sampling mechanism 1 according to the area of a region to be detected, and communicating the sampling mechanism 1 with a vacuum pump 2 through a pipeline.
Secondly, one control valve 113 is opened, the other control valve 113 is closed, and the gas to be detected enters the collection box 19 through the gas inlet pipe 11.
And thirdly, starting the ceiling fan 16, and carrying out homogenization treatment on the air in the collection box 19 by the continuous rotation of the ceiling fan 16 so as to enable the gas to be detected to be more uniform.
And fourthly, the gas enters the gas analyzer 4 through the gas outlet pipe 114 for analysis and detection.
Fifth, the second control valve 113 is opened, and the other control valves 113 are closed, and the gas collected by the second sampling mechanism 1 is detected.
Sixthly, the control valve 113 is opened in sequence by analogy, and multi-point sampling is circulated.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A foul smell space multiple spot sampling system which characterized in that: the device comprises a plurality of sampling mechanisms (1) distributed at the upper end of a to-be-detected surface source (5), a vacuum pump (2) communicated with the sampling mechanisms (1), and a gas analyzer (4) communicated with the vacuum pump (2); the sampling mechanism (1) comprises a collecting box (19) positioned at the upper end of the surface source (5) to be detected, an air inlet pipe (11) and an air outlet pipe (114) which are respectively communicated with two opposite side walls of the collecting box (19), a ceiling fan (16) arranged on the inner upper wall of the collecting box (19), and a control piece used for controlling the on-off between the sampling mechanism (1) and the gas analyzer (4), wherein the air outlet pipe (114) is communicated with the vacuum pump (2) through a pipeline.
2. A malodorous space multipoint sampling system as claimed in claim 1, wherein: the sampling mechanism (1) further comprises an air inlet valve (13) and an air inlet flow sensor (12), wherein the air inlet valve (13) and the air inlet flow sensor (12) are sequentially arranged on the air inlet pipe (11) along the air flowing direction.
3. A malodorous space multipoint sampling system as claimed in claim 2, wherein: the sampling mechanism (1) further comprises an air outlet valve (111) and an air outlet flow sensor (112), wherein the air outlet valve (111) and the air outlet flow sensor (112) are sequentially arranged on an air outlet pipe (114) along the flowing direction of air.
4. A malodorous space multipoint sampling system as claimed in claim 1, wherein: the sampling mechanism (1) further comprises an internal temperature sensor (14) arranged on the inner wall of the collection box (19) and an external temperature sensor (110) arranged on the outer wall of the collection box (19).
5. A malodorous space multipoint sampling system as claimed in claim 1, wherein: the sampling mechanism (1) further comprises a differential pressure sensor (17) embedded in the side wall of the collection box (19).
6. A malodorous space multipoint sampling system as claimed in claim 1, wherein: an anemoscope (18) is arranged at the upper end of the collection box (19).
7. A malodorous space multipoint sampling system as claimed in claim 1, wherein: an electric three-way valve (3) is arranged on a pipeline between the vacuum pump (2) and the gas analyzer (4).
8. A malodorous space multipoint sampling system as claimed in claim 3, wherein: the control element is a control valve (113) arranged between the air outlet flow sensor (112) and the vacuum pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121252812.7U CN214538820U (en) | 2021-06-04 | 2021-06-04 | Odor space multipoint sampling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121252812.7U CN214538820U (en) | 2021-06-04 | 2021-06-04 | Odor space multipoint sampling system |
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| CN214538820U true CN214538820U (en) | 2021-10-29 |
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| CN202121252812.7U Active CN214538820U (en) | 2021-06-04 | 2021-06-04 | Odor space multipoint sampling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793773A (en) * | 2023-08-25 | 2023-09-22 | 安徽农业大学 | Malodorous gas sampling device for livestock farm |
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2021
- 2021-06-04 CN CN202121252812.7U patent/CN214538820U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793773A (en) * | 2023-08-25 | 2023-09-22 | 安徽农业大学 | Malodorous gas sampling device for livestock farm |
| CN116793773B (en) * | 2023-08-25 | 2023-11-07 | 安徽农业大学 | Malodorous gas sampling device for livestock farm |
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